section 6 Current treatments for pain Flashcards
reffered pain
nociceptive pain arrising in one region but felt in other
- can be symptom of serious condition
left arm pain- heart attack
neuropathic pain
result of damaged to axon of nociceptor ; axon squeezed -production of action potential
7% people suffer, difficult to treat
alcoholism, spinal cord injury, cancer, diabetes nerve disorder, shingles, phantom pain
plasticity
process of changes in connection between neurons
invasive treatments
Non- steroidal anti inflammatory drug - NSAID local anaesthetic Opiates Antidepressants Surgery TENS
non invastive treatments
CBT therapy
NSAID
aspirin, ibuprofen
- acute nociceptive pain
- preventing the release of prostaglandins
- work on nerve endings
- reduce the frequency of action potential
Local anaesthetic
lignocaine
- blocking the voltage sensitive Na+ channels in axon of nociceptor
- used for acute nociceptive pain - dentist
Opiates
- morphine - opioid agonist
- mimic opioids like enkephalin
- work on spinal cord
- severe nociceptive pain, neuropatic pain in cancer patients
antagonist
blocking naturally occuring substances
enkephalin target pain in 2 ways…
- binds to receptor on transmission cell and inhibits it therefore frequency of action potential reduces
- reduces the no. of neurotransmitters released from nociceptor in spinal cord
Antidepressants
Amnitriptiline
- neuropatic pain
- Increases activity in the pathway from the brain to the spinal cord but may also act elsewhere in brain.
Surgery on CNS
- cordotomy
- Can be applied to the spinothalamic pathway, or brain regions associated with pain processing including thalamus and anterior cingulate cortex.
-Pain resistant to other treatments, often neuropathic pain associated with late-stage cancer.
TENS
Transcutaneous electric nerve stimulation
- Spinal cord to close the gate.
- Nociceptive and neuropathic pain. Include labour pain.
CBT
cognitive behaviour therapy
-Aims to challenge the behaviours and thoughts a person has surrounding their painful experiences.
-targets any pain
learnt helplessness
mindset that can develop in response to feeling that you have no control over negative situation